Process of making storage-battery plates.



arations.

UNITED sTAirEs Parana oFFIoE.

\ULLIAM MORRISON, OF CHICAGO, ILLINOIS, ASSIGNOR, BY;.\IESNE ASSIGNMENTS, TO EXMOOR STORAGE BATTERY COMPANY, OF CHIC-AGO. ILLlIiOlS. CORPORATION OF ARIZONA TERRITORY.

PROCESS OF MAKING STORAGE-BATTERY PLATES.

Specification of Letters Patent.

Patented April 13, 1909. v

To all whom it may concern:

Be it. known that l, VILLTA 3r Monmsox, a citizen of the l;n1ted States of America, and

resident of Chicago, Cook county, Illinois,

have invented a certain new and useful Improvement in Processes of Making Storage- Battcry Plates, of which the following is a specification.

My invention relates to the preparation of storage battery plates, and more particularly to the process and composition of material employed in providing the plates with the active material, or material to become active, and especially to the manufacture of the paste or material to become active which is employed in lead-batteries.

Generally stated, the object of my inven tion is the provision of an improved and highly etticient paste or material to become active for lead batteries, and of an improved and highly efficient process for producing the same.

A special object is to provide an improved process and composition of material whereby the ,said paste or material to become active will be much tougher and more serviceable and of longer life than heretofore.

Another object is to provide an improved process and composition of material whereby the paste or material to become active will, if such is desired, be of greater porosity than heretofore. y

it is also an object, of course. to provide certain details and features of improvement tending to increase the general elliciency of a process and composition of material of this particular character.

To the foregoing and other u eful culls, my improved process and composition of material may be as follows: in preparing the paste or material to become active. first take equal parts of lilhargc and soft lead. and mix the same together. ()r instead oli-litlh argc. rcd load may be employed and combined in equal parts with the said soft. lcad. .\gain, equal parts of all three of these dil t'crcnl oxids of lead may be mixed together, according lo the particailar results desired. The said soft lead is a crystalline oXid of load. and is well l(ll()\\'ll by that name bv. 1 I l those skilled in the manutaclurc of. glass,

and by certain manutacl'urers ot lead prep- Bcsldcs the name so't't load, the

term cnamelers lead also sometimes employed. as this crystalline oxid of lead is 1 employed by euamclers as well as by glassmaliers. This mixture of oxid of lead is then reduced to a paste in the following manner: First take a gallon of distilled water. and to this add three and one-half pounds of sulfate of ammonia, together with one pound of acetone and. one ounceor perhaps two ouncesot acetic acid. All these ingredients should be of a pure character, as better results are obtained by having them as pure as possible. Withthis liquid preparation the oxid of lead, consisting of soft lead and litharge (for example), may then be reduced to a. paste. A sufiicient amount of the liquid is added to the oxid of lead to thoroughly wet the latter and reduce the whole to a paste of the well known general character. WVhen pre ared, this paste, of course, can be applie to a lead plate or grid in any suitable, known or approved manner.

The use of soft lead is an important tealure, as it tends to increase the serviceability and life of the paste. The more of this ingredientthat is employed, the greater the durability and life of the paste. It must be borne in mind, however, that the more soft lead employed, the less the current capacity of the battery. lnother words, the use of this glass-1nakers lead is beneficial in this respect,-that it increases the duras bility and life of the paste or material to become active; but, at the same time, it is not well to employ such a large proportion of this particular ingredient as will materially reduce or cut down the general current capacity of the battery when in use. Good results, however, have been obtained by employing the foregoing proportion of the ditt'ercnt ingredients. The use of ace tone with sulfate of ammonia is, I find, an other beneficial expedient in the manufaclure of a paste or material to become active of this character. Again, I find that the use of acetone with acetic acid gives good results, and improves the character of the paste. Still better results are obtained by, employing all three of said ingredients, to; wit: acetone, sulfate of ammonia, and aceticacid. It will be understood, of course, that the proportions in which all of the foreits or material to become active, with of work for the bat- 01 carbonated The kind of lead used in the manufacture f of glass, and'm certain enameling processes, 2 and. commonly known as enamelers or soft lead, is, I purpose.

find, best adapted for the desired That used in the manufacture of 1 glass is often referred to as glass-makers litharge, or glass-makers red lead. As stated, any of these oxide of lead used in the manufacture of glass, or ei'iameling, or other analogous processes. may be employed in the preparation of the above described paste or material to become active. 't'er, however,

various kinds, and commonly known as I preto use the particular 0nd of lead used in the manufacture of glass of glass-makers lithargc, or glass makers red lead. But in the following claim I 2 term is used ncrease the porosity of 1 have used the broad or general term, soft lead, and it will be understood that this in its broadest and most comprehensive sense, and includes all of the soft leads used in enameling, inthe manufacture of glass, and in analogous arts.

The use of acetone, in the manner (or substantially in the manner) herein specified, is calculated, I find, to make the paste or active material of the plate much harder and tougher, and tends to make it much more satisfactory and serviceable in use.

-VVhat I claim as my invention is:

The process of preparing a paste, or material to become active, for storage batteries,

which conslsts in mixing a suitable quantity ot' soft. lead and an OXlCl of lead, and m.

then reducing the same to paste form by adding a liquid preparation obtained by mixing together water and acetone, of ammonia and acetic acid.

Signed by me at Cl1icago, C00k county,

"Illinois, this 29th day of December 1904.

VTLLTAM MORRISON. \Vituesses CLAREKGE M. THORNE, ALBERT SAUSER.

sulfate 

